Valve-seating device



-Aug. 18, 1925. Y

' E. J. 'MOYENv VALVE SEATING- DEVICE i Filed Jan. 11, 1923 2 Sheets-Sheet l i f l mw, Wm o w f, M

Aug. 18, 1925.

E. J.' MOYER VALVE SEATING DEVICE Filed Jan. ll,

2 Sheets-Sheet 2 Patented Ang. 18, `193.5.

UNITED STAEES .PATENT OFFICE..

EDGAR J'. MOYER, OF INDIANAPOLIS, INDIANA.

Application filed January 11, 1923.

To all whom t may concern:

Be it known that I, Ene/an J. Morra, a citizen of the United States, residingl at lndianapolis, in the county of Marion and State of Indiana, have invented new and useful Improvements in Valve-Seating Devices, of which the following is a specification.

This invention relates to improvements in rocking or rotating cylinder valves for controlling the supply of hydrocarbon mii;- ture to the explosion cylinders of internal combustion engines, and the ob] ect of the invention is to provide means for resisting the `tendency of the explosive force to lift the valve away from its seat and thereby cause leakage between the parts thus separated, with consequent loss in the amount of power developed by the engine.

Another object is to provide means for utilizing a part of the force of the explosion in the cylinder to thus hold the valve against its seat and prevent said leakage.

A further object is to apply the seating force to both ends of the valve alikein order to make the action equal and uniform for all parts of the valve.

I accomplish the above and other objects which will hereinafter appear, by the means illustrated in the accompanying drawings, in which- Fig. 1, is a front elevation and partial section of the valve-end of an internal combustion engine cylinder showing the valve in end elevation with my invention operatively applied. Fig. 2, is a side elevation of the same parts shown in Fig. 1. Fig. 3, is a top plan view of the same parts broken away in part. Fig. 4, is a view similar to that of Fig. 1, showing a modified form in which a diaphragm instead of a piston actuates the lever for seating the` rotary valve, and Fig. 5 shows a modification of the device of Fig. 4 whereby the parts are water-cooled.

Like characters of reference indicate like parts in the several views of the drawings.

During the compression and power' strokes when the valve port of the engine is not registering with the working cylinder port, power is lost by reason of the gases escap ing through the cylinder port opening past the valve unless the valve is held to its seat. By holding the valve tightly against its seat adjacent the cylinder port opening the gases are prevented from escaping at those places.

Serial` No. 611,981.

Referring tothe drawings, a single explosion cylinder 6 is here shown by way of illustration, it being understood that this may be duplicated as many times as may be desired, in accordance with the usual practice in gas engine construction. The hydrocarbon mixture admitted through a port 5 connects with a supply pipe '7 and the spent gases are discharged through the same port to and out through a pipe 8. A valve here shown as a cylindrical valve 9, is rotated by means not shown, in a housing or seat 10 with which the pipes 7 and 8 communicate. The valve 9 is recessed at diametrically opposite portions as shown by dotted lines in Fig. 1 in the manner to open the gas supply to the cylinder and later to appropriately open the cylinder to the discharge pipe. The valve may be rocked instead of rotated, by well known changes in construction, without departing from the spirit of my invention.

The pressure of the expanding gases in the cylinder 6 tends to move the valve away from port 5 and to cause leakage and loss Aof power. To correct this I exert a greater pressure against the valve to seat it than is exerted in the opopsite direction from within the cylinder, as follows Mounted in suitable `iournals cast on housing 10 is a rock-shaft 11 having a pair of lat eral arms l extending from the ends of the rock-shaft, each of which is bifurcated to receive a roller 12 mounted in the bifurcated ends and adapted to bear against the respective opposite ends of the valve 9 by appropriately rocking the shaft 11.

Keyed, or otherwise attached in fixed manner to the shaft 11 is a bent lever 13, the opposite end of which from the rock-shaft is against a piston 14 that reciprocates in a small cylinder 15 formed in the explosionend of the cylinder 6. The cylinder 15 communicates at its inner end with the explo sion chamber of the much larger cylinder G, and the outer end of its piston is against the lower end of the bent lever 13, as above stated, with the result that when the charge in cylinder 6 is tired the explosion acting against piston 14 moves the latter out against the lever, and force is exerted through the lever, the rock-shaft and arms ll, against the valve 9, equally at both ends of the valve, but multiplied over the pressure of piston 14 by the gain in leverage com puted by taking the rock-shaft 11 as a ful cruni, the lever 13 as a long arm and arms l as the short ariii of a pivoted lever.

In the modification shown in Fig. Ll a diaphragm 16 crossing and closing the cylinder 15 bears against a pin 17 that contacts the lever 13. This is a substitute for the piston 1&1 of'Fig. 1. ln the modification in Fig. 5 a double diaphragm is used separated by a perforated sleeve 18 which is connected with the jacket oit the water-cooling system ot' the engine and thereby prevents the overheating of the device.

The pressure-exerted on the valve by the piston or diaphragm through the associated levers causes the rotating valve to be held tightly against its seat around the port opening to the large cylinder.

'Vhile l have here shown the best term ot my invention now known to me, it is capable of many changes in form and arrangement, some ot which l have shown in the modi-- lied views, and l therefore do not desire to be limited unduly to the precise tornis shown and described or any more than is required by the appended claims, and having thus lully described my invention what l claim as new and wish to secure by Letters Patent, is-

1. The combination with a cylinder and a valve housing on said cylinder having a cylinder port, of a cylindrical valve member rotatably carried in said valve housing, said valve member being unseated in part by the pressure in the cylinder through said cylinder port, ol' a lever adapted to press on one end of said valve member', a second lever adapted to press on the other end ol said valve member, and means operated by the pressure in the cylinder for moving the said levers in the direction to seat the valve member in opposition to said unseating tendency.

2. The combination with a cylinder and a valve housing having a cylinder port, ot a cylindrical valve member rotatably carried within said valve housing and of a diameter to provide oil clearance between the valve member and the wall of said housing, a lever contacting one end of said valvemember at a point extended beyond said cylinder port, a second lever contacting the opposite end of said valve member at a point extended beyond the cylinder port, and means operated by the pressure in the cylinder for moving said levers in the direction to seat said valve member in opposition to the unseating tendency of the pressure in the cylinder through said cylinder port, said means permitting intermittent application and removal ol pressure on said valve ends.

3. The combination with a. cylinder and a one piece valve housing having a cylindrical bore therethrough and a port into said cj-:linder, ot' a valve member rotatably carried within and having a running lit in said housing permitting clearance 'for lubrication, a lever contacting one end olf said valve member, said point ot Contact bein-w' on a section of the valve member project-- ing` from the housing and beyond the oylinder port, a second lever contacting the opposite end ot said valve member projecting trom the housing and beyond the cylinder port, a pressure member adapted to be actuated by pressure irom the cylinder, and means: interconnecting said levers aud said pressure member whereby the travel ot' said pressure member is communicated to said levers thereby pressing the ends ot said valve member to seat the valve on said cylinder port in opposition to the pressure lrom the cylinder through said port, and removing the pressure on the ends oli the valve member upon reduction of the pressure in the cylinder.

4t. The combination with a cylinder and a valve housing having a cylinder port, of a cylindrical valve rotatably carried in said housing and having a diametrical clearance for the purpose of lubrication, a lever sha'lt, a lever secured to the shaft and adapted to contact the valve member at a point removed longitudinally of the valve trom the cylinder port, a second lever secured to the shaft and adapted to contact the valve member at a point removed longitudinally of the valve from the opposite edge of said cylinder port, said points of contact being spaced apart a distance exceeding that of the cylinder port lying therebetween and beingl substantially diamet-rically opposite the c vlinder port, an actuating lever of a length exceeding that of the first two levers and secured to said shaft, and a movable member adapted to be actuated by pressure within the cylinder, said movable member being adapted by reason of its travel thereby to contact said actuating lever.

Signed at Indianapolis, Indiana, this the 5th day of January, 1923.

EDGAR J. MOYER.

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